JSON Formatter
Format, validate and beautify JSON online — then download the result.
Online editor
Base64 Encoder / Decoder
Convert text to Base64 and decode Base64 back to plain text instantly in your browser. Full Unicode (UTF-8) support and nothing is uploaded.
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All files are processed only in your browser and are never uploaded to any server.
Quick answer
Encode text to Base64 or decode Base64 back to text free in your browser, with full UTF-8 support so Chinese, emoji and other non-Latin characters round-trip correctly. You can paste text or load a .txt file, then copy or download the result — nothing is uploaded.
- Input
- Plain text or Base64 · paste, or load a .txt file
- Output
- Copy to clipboard, or download as .txt
- Encoding
- UTF-8 · full Unicode and emoji support
- Direction
- Encode and decode · swap output to input in one click
- Data sent to a server
- None · everything runs locally
- Price
- Free · no registration
- Works on
- Any modern browser · Windows, macOS, Linux, iOS, Android
How to use this Base64 Encoder / Decoder
- Paste your text or Base64 string into the input box.
- Choose Encode or Decode.
- Copy or download the result.
Frequently Asked Questions
Is my data private?
Yes. Encoding and decoding happen entirely in your browser; nothing is sent to any server.
Does it support Unicode and emoji?
Yes. Text is encoded and decoded as UTF-8, so non-Latin characters and emoji work correctly.
What is Base64?
Base64 is a way to represent binary data as ASCII text. It is commonly used in data URLs, email attachments and API payloads.